Event: Dons Club Challengers

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Opponent	Rating	Result
Geoffrey R Moore	2079	0 - 1
Matthew J Morter	1484	1 - 0
Chris Jones	1555	½ - ½

performance = (sum(opponents ratings) + 400(wins-losses)) / games

1706 = (5118 + 400 * (1 - 1)) / 3)